18. Chia Burgers began operations by opening 115 restaurants in Western Canada at the end of its first year of operation

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18. Chia Burgers began operations by opening 115 restaurants in
Western Canada at the end of its first year of operations. By the
end of year 2, an additional 5 restaurants were opened. By the end
of year 3, there were 130 restaurants operational. At the end of
year 5, there were 138 total restaurants. If the number of eating
establishments is expected to grow in year 6 at the same rate as
the percentage increase in year 5, how many new eating
establishments will be added in year 6?
A. 5
B. 6
C. 7
D. 8
E. 9